<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>随机轮播图</title>
    <style>
      * {
        box-sizing: border-box;
      }
  
      .slider {
        width: 560px;
        height: 400px;
        overflow: hidden;
      }
  
      .slider-wrapper {
        width: 100%;
        height: 320px;
      }
  
      .slider-wrapper img {
        width: 100%;
        height: 100%;
        display: block;
      }
  
      .slider-footer {
        height: 80px;
        background-color: rgb(100, 67, 68);
        padding: 12px 12px 0 12px;
        position: relative;
      }
  
      .slider-footer .toggle {
        position: absolute;
        right: 0;
        top: 12px;
        display: flex;
      }
  
      .slider-footer .toggle button {
        margin-right: 12px;
        width: 28px;
        height: 28px;
        appearance: none;
        border: none;
        background: rgba(255, 255, 255, 0.1);
        color: #fff;
        border-radius: 4px;
        cursor: pointer;
      }
  
      .slider-footer .toggle button:hover {
        background: rgba(255, 255, 255, 0.2);
      }
  
      .slider-footer p {
        margin: 0;
        color: #fff;
        font-size: 18px;
        margin-bottom: 10px;
      }
  
      .slider-indicator {
        margin: 0;
        padding: 0;
        list-style: none;
        display: flex;
        align-items: center;
      }
  
      .slider-indicator li {
        width: 8px;
        height: 8px;
        margin: 4px;
        border-radius: 50%;
        background: #fff;
        opacity: 0.4;
        cursor: pointer;
      }
  
      .slider-indicator li.active {
        width: 12px;
        height: 12px;
        opacity: 1;
      }
    </style>

</head>
<body>
    <body>
  <div class="slider">
    <div class="slider-wrapper">
      <img src="./images/slider01.jpg" alt="" />
    </div>
    <div class="slider-footer">
      <p>对人类来说会不会太超前了？</p>
      <ul class="slider-indicator">
        <li class="active"></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
      </ul>
      <div class="toggle">
        <button class="prev">&lt;</button>
        <button class="next">&gt;</button>
      </div>
    </div>
  </div>
  <script>
      const sliderData = [
      { url: './images/slider01.jpg', title: '对人类来说会不会太超前了？', color: 'rgb(100, 67, 68)' },
      { url: './images/slider02.jpg', title: '开启剑与雪的黑暗传说！', color: 'rgb(43, 35, 26)' },
      { url: './images/slider03.jpg', title: '真正的jo厨出现了！', color: 'rgb(36, 31, 33)' },
      { url: './images/slider04.jpg', title: '李玉刚：让世界通过B站看到东方大国文化', color: 'rgb(139, 98, 66)' },
      { url: './images/slider05.jpg', title: '快来分享你的寒假日常吧~', color: 'rgb(67, 90, 92)' },
      { url: './images/slider06.jpg', title: '哔哩哔哩小年YEAH', color: 'rgb(166, 131, 143)' },
      { url: './images/slider07.jpg', title: '一站式解决你的电脑配置问题！！！', color: 'rgb(53, 29, 25)' },
      { url: './images/slider08.jpg', title: '谁不想和小猫咪贴贴呢！', color: 'rgb(99, 72, 114)' },
    ]
    let index=0
    let img=document.querySelector('img')
    let p=document.querySelector('p')     
   let footer=document.querySelector('.slider-footer')
   let lis=document.querySelectorAll('li')
   let next=document.querySelector('.next')
   let prev=document.querySelector('.prev')
   let slider=document.querySelector('.slider')
   function toggle(){
    img.src=sliderData[index].url       
      p.innerText=sliderData[index].title
     footer.style.backgroundColor=sliderData[index].color
      document.querySelector('.active').classList.remove('active')
      lis[index].classList.add('active')
   }   
   next.addEventListener('click',function(){
    index++
    index=index%8
    toggle()
   })
   prev.addEventListener('click',function(){
    index--
    if(index===-1){
        index=sliderData.length-1
    }
   toggle()
   })
   let id=setInterval(function(){
      index++
    //   通过取余运算，将index索引重置为0~7的数字
      index=index%8
    //   要根据最新的索引，重新设置背景图片、标题、背景颜色、小圆点
    // 设置轮播图图片为index索引对应的那个图片
    toggle()
   },1000)
   slider.addEventListener('mouseenter',function(){
    clearInterval(id)
   })
   slider.addEventListener('mouseleave',function(){
    id=setInterval(function(){
         index++
        index=index%8   
    toggle()
   },1000)
   })
   
    </script>
</body>
</html>